19728579

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^2\times {\mathrm{229}}^1$

素因数の和:339

約数の個数: 24

約数和(自身を含む): 29070160

約数和(自身を除く): 9341581

約数列:

[1, 3, 13, 39, 47, 141, 229, 611, 687, 1833, 2209, 2977, 6627, 8931, 10763, 28717, 32289, 86151, 139919, 419757, 505861, 1517583, 6576193, 19728579]

約数ペア:

[(1, 19728579), (3, 6576193), (13, 1517583), (39, 505861), (47, 419757), (141, 139919), (229, 86151), (611, 32289), (687, 28717), (1833, 10763), (2209, 8931), (2977, 6627)]